Lock.



H. G. VOIGHT.

LOCK.

APPLICATION FILED IAN. 26. \916.

Patented July 30, 1918.

3/SHEETS-SHEET I Fia-1.

WITNESS H. G. VOiGHT.

LOCK.

APPucAUoN FILED JAN. 26. l9l6.

1 ,273,958. Patented July 30, 1918.

. 3 SHEETSSHEET 2.

\ b 11/11/1114 ml I V T NE 55 ia awm ms mama-s PETERS cn.. PNnm-L!1Mu.,WAsNINGmN. p. c.

H. G. V'OIGHT.

LOCK.

APPLICATION FILED JAN. 26. 1916.

1 ,273,958. Patented July 30, 1918.

3 SHEETS-SHEET 3.

WITNESS [UNITED STATES PATENT or o HENRY e. VOIGHT, or NEW'BBITAIN, CONNECTICUT, ASSIGNOR TO SABGENT- econrm, or NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTIQU'1. I

LOOK.

Specification of Letters Patent.

Application filed January 26, 1916. Serial No. 74,460; 3

T all whom it may concern Be it known that I, HENRY Gr. VoroHT, a citizen of the United States, residing in New Britain, in the county of Hartford and State of Connecticut, have inventedcertaiin new and useful Improvements in Locks, of which the following is a full, clear, and eX- act description. v This invention relates to looks, and more particularly to looks for the corridor doors of hotels. The invention isespecially applicable to mortise locks having master keyed cylinders of such construction that when a bolt is protracted from the inside of the room, it cannot be retracted from the outside of the room by the master key in the possession of the maid, although it can be retracted under these circumstances by the emergency key.

One of the primary objects of the inven tion is to furnish a very simple and efiicient lock having these characteristics.

Another object of the invention is to provide a lock in which one of the keys acts as a shut-out key so that after the bolt has been protracted thereby it cannot, be retracted by the other keys, and in which this shut-out mechanism is very simple and effective.

provide, in combination with a mortise. lock mechanism having two different members, a master keyed cylinder lock which coop erates with these members in an improved manner in the operation of the look by the different keys.

To these and other ends,--the'invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawing,

Figure 1 is an elevation of a mortise lock embodying my improvements, showing the cover or cap plate removed, and the dead bolt in the retracted position;

Fig. 2 is a view of the upper part of the lock, showing the dead bolt protracted by the thumb turn from'the inside of the room';

Fig. 3 is a view similar to Fig. 2, showing the bolt partly retracted by the emergency key from the outside;

Fig. 4 shows the position of the parts when the bolt is protracted from the outside by the guest key or master key;

Fig. 5 is a. reverse view of the lock wlth A further object of the invention is to.

Patented July 30, 1918.

the dead bolt protracted from inside. bf

the room by the thumb turn;

Fig. 6 is a section'on line66 of 1; I

Fig. 7 is a section on line 7-7 of Fig.2;

F g. 8 is a section on line '8. 8 of Fig. 3;

Fig. 9 is a front view of the cylinder lock detached; and 1 I Fig. 10 is a detail section on line 1010 ofFigl.

I have shown my improvements as applied to a mortiselock having-asingle dead bolt which is protractable from the inside of the room by means of a thumb turn and from the outside of the room by means .of a cylinder lock having a series of different keys. The lock also has a knob controlled latch bolt. The particular features forming the subject of the present application may, however, be used to advantagein locks of widely difi'erent types. V

In the particular form shown,the usual mortise lock case 20, having the face plate 21, is equipped with a dead bolt 22 operative from the outside of the room by means of a cylinder lock 23 having-a series of keys, said dead bolt beingooperative from the inside of the room by means of a thumb turn (not shown) engaging a thumb turn hub 24L of ordinary type. Beneath the dead bolt a latch bolt 25 is normally projected out of the face plate by a spring 26, and is adapted to be retracted by knobs (not shown) connected inthe usual way with a hub or rollback 27 actuating a yoke or knob shoe 28, which retracts the latch bolt in the customary manner by engaging a cross-head 29 on the latch bolt stem. 7 I

' The dead bolt 22 has a shank 30 guided by a slot 31 on the fence or stump 32 cast 7 dead bolt being pivoted thereto at 37. This tumbler has a lug 38 adapted to cooperate in the usual manner withthe fence or stump 32 on the case so as to lock the bolt either in the projected or retracted positions. At the rear extremity. of the tumbler 36, the same is provided with a loop 39 which embraces and. clears the thumb turnhub24, and

on the upper part of the loop 39 isa projection 40 which lies between the talons 8 1, as shown in Fig. 5, and is adapted to be engaged by the rollback 35 of the cylinder lock for the purpose of releasing the lug 38 from the fence 32, while the rollback, in 1:gcting on the talons, projects or retracts the olt.

Mounted below the dead bolt 22 is a slide 41 which is suitably guided for reciprocation in a line parallel to the dead bolt, and is adapted to protract the dead bolt through the actuation of the thumb turn hub 24. In the form shown, the slide 4:1 has a groove engaging a guide fin 12 on the back of the case '(Fig. 5), and a shoulder a3 projecting upwardly from the slide engages a recess &% in the lower edge of the dead bolt. When the parts occupy the position shown in Fig. 1, the shoulder -13 engages the forward edge of recess 44; so that the dead bolt may be protracted by the forward movement of the slide, as shown in Fig. 5. The slide carries a post 45, on which ismounted a secondary tumbler a6. This secondary tumbler is is adapted to be actuated either by the thumb turn hub 24 or by the rollback 05 of the cylinder lock. For this purpose, the sec ,ondary tumbler is provided with a pin 17 projecting over the loop 39 of the primary tumbler and located between wings 2-1, 249 onthe hub 2%, while an arm 16 at the free extremity of the secondary tumbler extends upwardly across the loop 39 and carries a sweep 46 lying alongside the upper part of the loop and the projection 10 thereof and alongside the talons 34 of the dead bolt. Undernormal conditions, the sweep e6 of the secondary tumbler overlies the talons of the bolt in the manner shown in Fig. 1, it being understood that the projection 10 on the primary tumbler is located between the talons in a plane offset from the sweep 46 The secondary tumbler 46 cooperates with a fence or stump 46 on the back of the lock case, which is adapted to hold said tumbler and thereby the connected slide 41 either in the retracted position, shown in Fig. 1, or in the advanced position shown in Fig. 2. A lug $8 on the intermediate portion of the secondary tumbler is located above a hook 19' depending from the primary tumbler, the arrangement being such'that the depression of the secondary tumbler either through the thumb turn hub or through the cylinder lock mechanism will cause a corresponding depression of the primary tumbler, so as to disengage the same from the fence or stump 32.

Referring now to the detailed construction of the cylinder lock 23, it will be observed thatthis cylinder lock has the-usual case 50, faceplate or escuteheon 51, and key plug or barrel 52. The dog or rollback 35 previously mentioned is secured on the rear end ofthe keyplug Preferably, it en'ibraces an extension 52 on the rear end of the key plug and is secured to said plug by means of screws Surrounding the key plug is a sleeve 5% rotatable concentrically with respect to said key plug. Sectional pin tumblers 55 of the usual type connect the key plug, sleeve and casing, the arrangement being such that one key is adapted to rotate the key plug ii'idividually, while another key rotates both the key plug and sleeve, as hereinafter described.

In accordance with the present invention, the tumblers 36,16 of the bolt are arranged to be operated jointly and simultaneously by the single rollback 35, in case one key is used, and when another key is used the rollback 35 will operate the tumbler 36 without operating the secondary tumbler 46. In other words, when the guest key'or change key 56 is used to actuate the cylinder lock, the rollback 85 will be so rotated that its operating projection 35 will turn in the plane of the primary tumbler 3G, and out of the plane of the secondarytumbler 16, so that the tumbler '86 will be actuated individually, while when the emergency key 57, shown in Fig. 8, is used to actuate the cylinder lock, the operating projection 35 of the rollback will be rotated in the plane of the secondary tumbler so as to actuate said secondary tumbler and thereby actuate the primary tumbler through the connection which exists between the hook 4:9 and lug 4:8 previously described. To accomplish these results, one of the rotary tiunbler controlled members of the cylinder lock is displaceable rearwardlv when the tumblers have been racked in a predetermined manner by one of the keys, whereas said member is not displaceable rearwardly when another key is used. In the particular example illustra'ed, the sleeve 51 is movable endwise of the casing 50 when the emergency key is used,'and to permit this the shoulder 58 at the forward end of'the sleeve operates in a somewhat wider rabbet in the face plate of the cylinder, so that whenthe sleeve is released and turned by a key, as shown in 8, the sleeve may move rearwardly until the shoulder 58 takes up against a shoulder 60 on the casing of the cylinder. In other words, the shouldered portion of the casing at the face of the cylinder which limits the endwise movement of the sleeve is farther back than in ordinary cylinders so that the sleeve may have an appreciable rearward m'oven'ient. In this operation, the sleeve is locked by the 1 pin tumblers to the key plug so'that the latter is likewise carried rearwardly together with the rollback so that instead of rotating in the normal. plane of rotation, to wit, the plane of the primary tumbler, the rollbackis carried 'rcar'wardly and rotated in the plane of the secondary tumbler. Before the sleeve is turned on its axis, it should be held against rearward movement by suitable means, which relieves the pin tumblers of strain. To this end, I may attach to the rear of the cylinder lock a plate 61 which is secured to the upper portion of the cylinder by screws 62 (Fig. 10), and has a'depending tongue or lip 63 abutting against the rear face of a; cam member 64 screwed or otherwise secured to the rear extremity of the sleeve 52. hen the emergency key 57 is inserted'into the cylinder, the engagement between the lip 63 and the cam 64 will take up rearward thrust on the sleeve, and thereby relieve the tumblers of strain and wear, but when the sleeve is turned by the emergency key 57, the cam 64 will disengage the lip 63 and thereby permit the sleeve to be thrust rearwardly under the usual pressure on the key so 'that'the rollback 35 will be rearwardly displaced, as above explained. By preference, the cam 64 embraces the rear extremity of the key plug and is screwed against the rear face of the sleeve that part of the cam engaging the lip 63 being in the form of a radial projection which is rounded off at its rear face, as shown at Fig. 10, while the cooperating lip (53 is rounded off at the frontface thereof. In Fig. 6, I have shown the position of the parts when the change key 56 is inserted into the cylinder. This change key racks the pin tumblers in such a manner as to release the key plug for independent rotation, while the sleeve 54 remains locked to the casing of the cylinder. By using this change key, the tumbler 36 may be actuated individually and the dead bolt may be protracted independently of the slide 41, as shown in Fig. 4. As

the primary tumbler is depressed, the hook' 9 thereon is moved out of engagement with the lug on the secondary tumbler, so that the bolt and the primary tumbler move together, while the slide 41 and the secondary tumbler remain stationary. then the emergency key is inserted into the cylinder, the pin tumblers are racked so as to permit the key plug and sleeve to rotate together. lVhen the key is inserted so as to release the sleeve and key plug from the casing, rearward movement of the rollback is at first prevented by the engagementoflip 63 with cam 64, as previously explained, but when the key is turned in either direction, the projection of the cam (34 passes clear of the lip 63, and is then immediatcly moved rearwardly by theusual pressure of the hand of the person actuating the lock so as to carry the rollback into the plane of the secondary tumbler, as hereinbeforc described. If, however, the pressure on the key is not sufficient to move the rollback to its rearmost position, this will be effected by the cam action of the cam 64 on the casing of the cylinder lock, which is cut away to present cam surfaces 65 adapted to be .0011- ta'cted by the cam 64, as the latter'is rotated in one or the other direction and to force the rollback 35 in a rearward direction.

The cam 64 rotates in contact with the rear ondary tumbler until the key is rotated through nearly three hundred and sixty de grees, or is turned back to the initial position. As the parts approach their initial position, the cam 64 strikes against the lip 63,-which is also in the nature of a cam, and said lip forces the cam forwardlyv again so that when the tumblers are lined up for the removal of the key the sleeve, key plug and rollback will occupy the normal positions relatively to the cylinder. I

Supposing that the improved lock is used on the door of a hotel room, the thumb turn is turned by thc 'guest from theinside of the room, when it is desired to lock the door against intrusion. In this operation, the hub 24 depresses the secondary tumbler (releasing it from fence 46"), which tumbler in turn depresses the primary tumbler through the connection 48, 49, and then when the primary tumbler has been pulled out of engagement with the fence 32, the continued rotation of -the hub 24 will push the secondary tumbler forwardly. This secondary tumbler in turn carries forward the slide 41 which, by the engagement of shoulder 43 with the lower portion of the dead bolt, protracts the dead bolt concurrently with the slide, shown in Fig. 5. In the protracted position, the bolt is deadlocked by the fence 32 cooperating with the primary tumbler and by the slide, which in turn is deadlocked in the advanced position by the fence 46 cooperating with the secondary tumbler. I have not shown the maids key, nor the grand-master key, but it will be understood that; under the conditions noted, these keys will be inoperative to retract the dead bolt, for the reason that said keys, like theguest key 56, rotate the keyplug of thecylinder individually. and therefore do not carry the rollback 35 back into the plane secondary tumbler and actuates the primary tum ler concurrently ith the secondary tumbler to release the bolt, after which the rollback engages the talons to retract the. bolt.

The emergency key will also act as a shutout key for locking the door in such a mannor that it cannot be opened by the other keys of the series. In protracting the bolt, the emergency key causes the rollback 35 to actuate the secondary tumbler and this secondary tumbler in turn actuates the primary tumbler, so that in the protraction of the bolt both tumblers are operated in substantially the same manner in which they are operated by the thumb turn. In other words, when the bolt is protracted by the emergency key, the tumbler mechanism takes the position shown in Fig. 2. It has been previously explained that when the tumbler mechanism is in this position, the bolt cannot be retracted by the guest key, the maids key, or any other key which is incapable of thrusting the rollback rearwardly into cooperation with the secondary tumbler. In order to retract the bolt, the slide 41 must be moved back out of its forward position, shown in Fig. 5, and to do this the secondary tumbler which is carried by said slide must be released from the stump or fence 46 In other words, when the bolt and slide are projected together by the thumb turn or by the emergency key, it is impossible to retract the bolt by a key which does not actuate the ,econdary tumbler to release the slide.

It is important to note that the rollback of the cylinder lock will give the primary tumbler a full depression, through the secondary tumbler, without the actual necessity of directly engaging the primary tumbler, because the rollback rotates on the same axis under all. conditions owing to the fact the I the sleeve and key plug are concentric) and therefore the secondary tumbler is depressed to a sufiicient, extent to carry the primary tumbler out of locking engagement with its stui p or fence. I do not limit myself, however, in all aspects of the invention to a construction in which a concentric key plug and sleeve are employed, nor to one in which the cylinder lock carries a single rollback, although in certain phases of the invention these features are of advantage. Neither do I limit myself in all aspects of the invention to a lock construction involving a dead bolt with primary and secondary tumblers.

Various changes in the details may be made without departing from the scope of the invention as defined in the claims.

I do not claim herein certain features of my cylinder lock mechanism per 86 as claimed in my application Serial No. 74,461, filed of even date herewith.

What- I claim is 1. In a look, a dead bolt, a slide, a common tumbler mechanism for said dead bolt and slide, and a cylinder lock having a single cam or rollback movable bodily relatively to said lock for protracting the bolt with or independently of the slide; substantially as described.

2. In a look, a. dead bolt, a slide, interengaging tumblers mounted on the dead bolt and slide respectively, a cylinder lock, and a rollback carried by said cylinder lock and movable bodily relatively to said tumblers for engaging and operating either of said tumblers; substantially as described.

3. In a look, a dead bolt, a slide, a tumbler carried by the dead bolt, a tumbler carried by the slide, means of engagement between said tumblers, a cylinder look, a rollback on said cylinder lock, a key for moving said rollback into operating engagement with one of said tumblers, and another key for moving said rollback axially into operating engagement with the other tumbler; substantialy as described.

4.111 a look, a dead bolt, a slide movable parallel to said dead bolt, a thumb turn member to protract said dead bolt by means of said slide, and a cylinder lock having a single rollback movable bodily to operate said dead bolt with or independently of said slide; substantially as described.

5. In a look, a dead bolt, a slide, manually operable means at the inside of the door to protract said bolt by means of said slide, a cylinder lock at the outside of the door, a rollback for said cylinder lock, a key to move said rollback into cooperation with both said bolt and said slide to protract the bolt by means of said slide, and another key for operating said bolt independently of the slide by means of the same rollback, said cylinder lock being constructed to move said rollback bodily when operated by one of said keys, substantially is described 6. In a look, a dead bolt, a slide movable parallel to said bolt, a common tumbler mechanism for said slide and said bolt involving two tumblers located in different planes, means to operate said tumbers from the inside of the door, a cylinder look at the outside of the door, a single rollback for said cylinder look, a key for moving said rollback into cooperation with one of said tumblers to protract the bolt by means of the slide, and another key to protract said bolt independently of the slide by moving said rollback into engagement with the other tumbler, said cylinder lock being constructed to move said rollback bodily when operated by one of said keys, substantially as described.

7 The combination with a mortise lock mechanism having two members lying in diflerent planes, and means for operating one of said members through the other, of a cylinder lock having a single rollback, a key with oneofsaid members to actuate it independent-1y, and another key for shifting said rollback into another plane of rotation to actuate said last-named member through the other member; substantially as described.

8. The combination with a mortise lock mechanism having two members lying in dilferent planes, and means for operating one of said members by means of the other, of a cylinder lock,'a single rollback for'said cylinder look, a key for rotating said rollback into engagement with one of said menibers to actuate it independently, and another key for displacing said rollback rea rwardly and rotating it into engagement with the other member so as to actuate saidindePendently operable memberthrough such other member; substantially as described.

9. The combination with a mortise lock mechanism having two members lying in different planes, and means for operating one of said members by means of the other, or a cylinder lock, a. single rollback for said cylinder lock, a key for rotating said rollback into engagement with one of said members to actuate it individually, andanother key for displacing said rollback rearwardly and'rotating it'into engagement with the other member soas to actuate said independently operable member through such other member, said rollback rotatable on the same axis by both of said keys; substantially'as described. 7

v10. The combination with lock mechanism having a primary tumbler and a secondary tumbler operating in different planes, and means for operating the primary tumbler through the secondary tumbler, of a cylinder look, a rollback carried by said cylinder lock, a key for rotating said rollback into operating engagement with said primary tumbler in order to actuate the lattor independently, and another key for moving said rollback into the plane'ot said secondary tumbler and rotating said rollback into engagement with said secondary tumblcr to actuate both tumblers; substantially as described.

11. The combination with mortise lock mechanism having primary and secondary members operating in different planes, of a cylinder lock having a rearwardly displaceable rollback adapted to engage and operate either of said members; substantially as described.

12. In combination with mortise lock mechanism having primary and secondary members lying in different planes, a cylinder lock, a rollback carried by said cylinder lock, a key for rotating said rollback in its normal plane into operating engagement with one of said members, and another key for displacing said rollback rearwardly with respect to said cylinder lock and movinglit into operating engagementwith said other member; substantially as described;

' (18.; Inf'combination with "'m'ortiseflock mechanism'hay ng primary and secondary members lying different plane's, a cylin der-lock, a rollback'c'arried :by'said cylinder lock, a key for rotating said rollback in its normal plane into operating engagement with one of said members, and another key for displacing said rollback rearwardlywith respect'to said cylinder lock and moving it into'operatin'g engagement with said other member, said rollback rotatable about the same axis by both of said keys; substantially as described. f v

14. The combination with a cylinder lock having a casing and. a'concentric key plug and sleeve, ofa rollback carried byythe key plug, a mortise lock 'mecha'nism having two members operating indifferent planes, a k'eyfor rotating said rollback into'operating engagement With one of said members,

and another key for displacing saidrollback rearwardly and rotatingfit in operating engagement with the 0th 'stantially as described' 15. In a, look, a deadbolt, a. slide, a comer member submon tumblermechanism for'said dead bolt and said slide, and cylinderilock having a cam orrollback movablein one plane for protractin'g the bolt with the slide and movable in another plane for protracting the bolt independently of the slide; substan tially as described. 7 i

16. In a lock, the combination of a bolt mechanism having two tumblers lying in different planes, and a cylinder lock having a rollback movable axially to engage and, operate either of *said'tumblers; substan tially as described; A

17. The combination of a pin tumbler lo'ck having a key plug, a rollback 'fixed'on the key plug, two keys, means for displacing said rollback in a rearward direction by one of said keys without so displacing it by the other key, and mortise lock mechanism to cooperate with said rollback when the latter occupies either of two positions; substantially as described.

18. A cylinder lock having a rollback, a key for rotating said rollback in one plane, another key for rotating said rollback, a

cam for thrusting said rollback into another plane as it is rotated by said second key,

and a mortise lock mechanism having members arranged to be engaged and operated by said rollback when it lies in said rethe rotation of said rollback in said plane and then thrusting the rollback into another plane at a definite point in the rotation thereof, and a mortise lock having operating members lying in the respective planes, both arranged to be engaged and ope ated by said rollback; substantially as described.

H 20. A cylindcr lock having a key plug, a sleeve surrounding the key plug, pin tumblers, a key for rotating the sleeve with the key plug, means for shifting the sleeve and key plug in an endwise direction when the sleeve is released by said second key, a rollback fixed to the rear end of the key plug, and a mortise lock mechanism constructed and arranged to be actuated by said rollback" through either of said keys; substantially aS described.

21. In a look, a dead bolt, a slide, a common tumbler mechanism for said dead bolt and slide, and a cylinder lock having a cam or rollback with a single operating projection for protracting the bolt with or inde pendently of the slide.

22. In a lock, a dead bolt, a slide, interengaging tumblers mounted on the dead bolt and slide respectively, a cylinder lock, and a rollback on said cylinder lock having a single operating projection for engaging and operating either of said tumblers.

23. In a lock, a dead bolt, a slide, a tum bler carried by the dead bolt, a tumbler car ried by the slide, means of engagement between said tumblers, a cylinder look, a r0llback on said cylinder lock having a single operating projection, a key for moving said operating projection into operative engagement with one of said tumblers, and another key for moving said operating projection into operative engagement with the other tumbler.

Qt. In a look, a dead bolt, a slide, interengaging tumblers mounted on the dead bolt and the slide respectively, a cylinder lock,

and a rollback on said cylinder lock having a. radial arm for engaging and operating either of said tumblers.

25. The combination with a mortise lock mechanism having two members lying in different planes, of a cylinder lock, a rollback on said cylinder lock having a single operating projection, a key for moving said operating projection into engagement with one of said members to actuate the same, and another key for moving said operating projection into engagement with the other mem her to actuate the same.

26. The combination. with a mortise lock mechanism, having two members lying in difi erent planes, of a cylinder lock, and a rollback on said cylinder lock having a radial arm constructed to engage and operat either of said members.

27. In a look, a sliding bolt, 'means for operating said bolt including primary 'and secondary members operating in dili'erent planes, and a cylinder lock having a rollback with a single operating projection adapted to engage and operate either of said members.

28. In a lock, a sliding bolt, means for operating said bolt, comprising members positioned to operate in difl'erent planes, and a cylinder lock having a rollback with a single operating projection adapted to engage and operate any one of said members.

29. In a lock, the combination of a bolt, a-pair of swinging members for operating said bolt )ositioned to swin in diiferent planes, and a cylinder lock having a rollback with a single operating projection adapted to engage and operate either of said members.

In witness whereof I have hereunto set my hand on the 24th day of January, 1916.

HENRY Gr. VOIGHT.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents,

Washington, D. C. 

